I am quickly trying spack on bg-q. I have xlc/gcc in $PATH but spack doesn't detect it:

$ which xlc
/usr/bin/xlc
$ which gcc
/bgsys/local/gcc/4.8.1/bin/gcc
$ spack compiler find
==> Found no new compilers
$ spack compiler add
==> Found no new compilers
$ spack compiler add /bgsys/local/gcc/4.8.1/bin/
==> Found no new compilers

For arch, I see following:

$ spack arch
bbq-None-powerpc

"None" in arch indicate problem? I have no knowledge of the code but by looking at

lib/spack/spack/platforms/bgq.py

it seems like "add_operating_system" is missing and whenever there is query for os, this returns None. This might be causing this issue?

If I run any command to install package, it hang somewhere.

Could someone have a look? Am I missing anything?